Jayden_Larbi wrote:
Is there a way for them to turn off the phone ad factory reset it
That depends. If it was unlocked, and the thieves know the passcode, then did you have Stolen Device Protection enabled? If not, they have access to all of your content and can also remove the phone from Activation Lock by just changing your Apple ID password.
If it was locked then your content is safe.
Beware of a common phishing scam: You may get a text or email from “Apple” or “Apple Security” (or sometimes “Police”) saying your phone has been found and to click on a link to see its location. This is NEVER from Apple or from law enforcement; it is from the thief or fence to steal your Apple ID and identity. Delete any such message without responding to it. Apple never gets involved in lost or stolen devices→Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams
Finally, if you actually could locate it how could that help? Confront the thief? People have been murdered doing that. Ask the police? Unless you live in a very small town police don’t want to get involved with low value thefts that have very little chance of recovery. Your phone is probably already on its way to a repurposing factory in Shenzhen, China.